Lone Gunman,
My response was to you, as I had quoted your post. Your question was off-topic so I addressed it separately from the OPs question.
The link budget is similar between 12177 and 11842.
11842 suffers from adjacent satellite interference, so an LNBF mounted outside of the prime sweet spot will have considerable lower Signal Quality readings. In your case, the Sami dish with the narrower KU band beam pattern attenuates the adjacent satellite interference and you will observe very little reduction in adjacent satellite interference as you are not moving the scalar on your prime focus dish and the F/B ratio would affect both transponders similarly.